<template>
    <div class="nav-bar">
        <div class="left" @click="goback">
            <slot name="left" >
                <img src="../../../assets/images/左箭头.png" height="128" width="128"/></slot>
        </div>
        <div class="center">
            <slot>图书商城</slot>
        </div>
        <div class="right">
            <slot name="right"></slot>
        </div>
    </div>
</template>

<script>
    import {useRouter} from 'vue-router'
    export default {
        name: "NavBar",
        setup(){
            const  router = useRouter();
            const goback= () =>{
                router.go(-1);
            }
            return {
                goback
            }

        }
    }
</script>

<style scoped>
.nav-bar{
    display: flex;
    background-color: #4fc08d;
    color: #FFFFFF;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    z-index: 9;
    height: 45px;
    line-height: 45px;
    text-align: center;
    box-shadow: 0 2px 0px rgba(100,100,100,0.1);
}
    .left,.right{
        width: 60px;
    }
    .center{
        flex: 1;
    }
    img{
        height: 40px;
        width: 40px;
        padding: 4px;
    }
</style>